"Eating an Apple" by John Timmons The release number is 1. The story creation year is 2007. The story headline is "Eat An Apple, Leave the Core". The story genre is "Other". The story description is "A simple example of how consuming something edible makes it disappear but then replaces it with something else." Release along with the source text, a website, and an interpreter. The Foyer is a room. [Here we have created an apple and made it edible.] The apple is in the foyer. It is edible. The description is "This is a ripe, green granny smith apple." [The idea here is, once the player eats the apple, all they should have left is the core. So we create the apple core but do not give it any location. It will be put in play after the player eats the apple.] The apple core is a thing. The description is "This apple core all that is left of that granny smith apple you just consumed." [When the player eats something that is edible, it is gone for good. This after rule says give the apple core to the player thus making an invisible exchange. It also provides an appropriate response to the player.] After eating the apple: now the apple core is in the player; say "You gobble down the apple careful not to eat any of those cyanide-laced seeds you heard about." test me with "x apple / take apple / inventory / eat apple / inventory / x apple".